Window blind or shutter



(No Model.)

M. B. BRISTOL & 0. A. PAGE.

WINDOW'B-LIND 0R SHUTTER.

Patented Dec. 9, 1884.-

0 indicates the frame, which may be of any oro recesses terminates in anacute angle with regroove being designed to engage the adjacent groovesof the slat, respectively, and the abage and prevent the slats fromdrawing apart,

out in the claims appended.

' UN TE STATES PATENT OFFICE.

MELANOTON B. BRISTOL AND ORANGE A. PAGE, OF OSKALOOSA, IOWVA.

WIND'OW BLIND OR SHUTTER.

SPECIFICATION forming part of Letters Patent No. 309,024, dated December9, 1884.

Application filed October 6, 1884.

To all whom it may concern.-

Be it known that we, M. B. BRISTOL and ORANGE A. PAGE, citizens of theUnited States, residing at Oskaloosa, in the county of Mahaska and Stateof Iowa, have invented certain new and useful Improvements in InsideWVindow Blinds or Shutters, of which the following is a specification,reference being had to the accompanying drawings.

This invention has relation to improvements in inside window blinds orshutters; and it consists in the peculiar construction and novelarrangement of the slats, and, in combination therewith, of the framehaving grooves to receive the said slats, all as will be hereinaftermore fully set forth, and particularly pointed In the accompanyingdrawings, to which similar letters of reference are made indicatingcorresponding parts in the several figures,

1 Figure 1 is a view of a section of a windowblind constructed accordingto our improvements. Fig. 2 is a vertical central sectional view of aportion of the same. Fig. 3 is an end view of several of the slats,showing the same connected to each other. Fig. 4 is a detail sectionalview of the frame, and Fig. 5 is a perspective view of one of the slats.

Referring to the said drawings by letter, A

dinary or approved construction, having the rails a respectivelyprovided on their inner sides with longitudinal grooves b for thereception of the slats, as will be presently explained.

B indicates the slats, which are of a peculiar construction, havingtheir opposite edges grooved or recessed longitudinally, as at 0. One ofthe walls of each of these respective lation to the flat or beveledouter side thereof, as at D, and the opposite wall at an abrupt orobtuseangle,asat E,theacute-angled wall ofthe rupt-angle wall designedto overlap the outer side of the slats, as shown at F. The walls E areof much greater depth than the walls D, the object of which is toprovide for shrinkso as to create an opening which would cause theadmission of light. The opposite ends of (No model.)

longitudinal or overlapping edges on opposite sides, and tapering in thedirection of each other toward the acuteangle wall of the groove, theshoulders (I of the tenons engaging snugly the inner plane sides of therespective rails of the said frame. Thus it will be perceived that theadvantages of both a lap-slat and tongue-and-groove slat may be obtainedin a single slat, which can be manufactured as cheap as the slats atpresent in use. These slats, in connection with the bars having durableblind, and may be applied to rolling blinds as well as fixed orstationary ones.

What weclaim as new, and desire to secure by Letters Patent, is-

1. The combination, in a window blind or shutter, of the side railstudinal grooves, and the slats having their longitudinal edgesrespectively grooved and their ends tenoned to engage the grooves of thesaid rails, the tenons being oblique to the sidesof the slats, and oneof the edge walls of each slat-groove adapted to engage the groove ofthe adjacent slat, and its opposite wall overlap the same, substantiallyas specified.

provided with longi-.

the longitudinal grooves, form a very 2. A window-slat having its endstenoned obliquely'to its sides and its opposite longitudinal edgesrecessed, so as to present an acute and an obtuse edge wall on eachrespective longitudinal edge of the slat, whereby the acuteangle edge ofeach slat may be received by the edge recess of the adjacent slat, andthe obtuse-angle edge brought to overlap the adjacent acute-angle wallof the recess through-v out the blind, substantially as shown anddescribed.

3. The combination, with the side rails of a window blind or shutterhaving longitudinal grooves, of the slats having their ends tenoned toengage the said grooves, and their longitudinal edges grooved throughouttheir length, one of the edge walls of each recess being adapted tofitwithin the longitudinal edge recess of the adjacent slat, and theopposite wall of the same recess adapted to overlap the outer side ofthe same slat, whereby both a lap and a stantially as specified.

tongue-and-groove joint may be formed, substantially as specified.terminating in an acute angle, substantially 4. A window-slat having itsends tenoned as shown and described. for insertion into the groovedrails of a win- In testimony whereof we afifix onrsignatures r 5dow-frame, and grooved on opposite longiin presence of two witnesses.

tudinal edges respectively with one wall of each groove o f less lengththan the other, subg ggggg g Ei each groove of less length than theother, and

5. Awindowslat having its ends tenoned ob- Vitnesscsn liquely to itssides, and grooved longitudinally L. A. SCOTT, on opposite edges, havingone of the walls of H. P. TURNER.

